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Three-Dimensional Virtual Touch Display System for Multi-User Applications

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4 Author(s)
Yi-Pai Huang ; Dept. Photonics/Display Inst., Nat. Chiao Tung Univ., Hsinchu, Taiwan ; Guo-Zhen Wang ; Tian-Sheuan Chang ; Tsu-Han Chen

By embedding optical sensors onto a TFT substrate in a display, a flat panel can sense images projected by infrared (IR) light. Light pens which can project Multi- T-mark including out-mark and in-mark of IR images were utilized to calculate the 3-axis information ( x, y, and z) of the tip of the light-pen and achieve accurate user identification accordingly. Therefore, a 3-dimensional virtual touch display for 3-axis information with multi-user/multi-touch system can be achieved.

Published in:

Journal of Display Technology  (Volume:9 ,  Issue: 11 )